/**
 * @file   helloworld.cpp
 * @author zql <zql@zql-VirtualBox>
 * @date   Fri Sep 17 22:11:19 2021
 * 
 * @brief  homework1
 * 
 * 
 */

#include <iostream>
using namespace std;

int main(int argc, char* argv[])
{
    cout<<"Hello world!"<<endl;
    return 0;
}
